Benchmarks for the Core i9-12900K, the rumored flagship of Intel's future Alder Lake-S CPUs, have been posted online. Twitter user HXL has discovered a video of YuuKi AnS on Bilibili, in which he is demonstrating and testing the chip in question. 

A screenshot of CPU-Z reveals that it is an engineering sample, with 16 cores and 24 threads, according to the program. The CPU-Z benchmark is the first to be completed: the 12900K earns a singlecore score of 827.7 points, which is 16 and 24 percent higher than the i9-11900K and Ryzen 9 5950X, respectively. When all threads are enabled, the 12900K outperforms its predecessor by 59 percent; nevertheless, the Alder Lake processor is outperformed by the 5950X by a same margin. The 12900K is competitive with its Ryzen counterpart, as the Intel model has a quarter less threads on board and is only 11.6 percent slower than the Ryzen model.

When it comes to single-threaded performance, Cinebench R23 exhibits a similar pattern to the previous benchmark. The Intel chip, which has 16 cores, is 25 percent faster than the 5950X and 13 percent faster than the 11900K, according to Intel. With regard to multicore scores, however, the performance of the 12900K beats the Rocket Lake CPU by 65 percent, while the 5950X's advantage over the 12900K shrinks to 5.5 percent in favor of the 12900K.

Because it is unclear under what conditions these processors have been evaluated, you should treat these benchmarks with caution, as you would with any other. In the course of next week, Intel is anticipated to announce the first K(F) models from the Alder Lake line.

Intel Core i9-12900K engineering sample: multithreading Ryzen 9 5950X 11% faster.